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mailcow/helper-scripts/backup_and_restore.sh

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#!/usr/bin/env bash
DEBIAN_DOCKER_IMAGE="mailcow/backup:latest"
if [[ ! -z ${MAILCOW_BACKUP_LOCATION} ]]; then
BACKUP_LOCATION="${MAILCOW_BACKUP_LOCATION}"
fi
if [[ ! ${1} =~ (backup|restore) ]]; then
echo "First parameter needs to be 'backup' or 'restore'"
exit 1
fi
if [[ ${1} == "backup" && ! ${2} =~ (crypt|vmail|redis|rspamd|postfix|mysql|all|--delete-days) ]]; then
echo "Second parameter needs to be 'vmail', 'crypt', 'redis', 'rspamd', 'postfix', 'mysql', 'all' or '--delete-days'"
exit 1
fi
if [[ -z ${BACKUP_LOCATION} ]]; then
while [[ -z ${BACKUP_LOCATION} ]]; do
read -ep "Backup location (absolute path, starting with /): " BACKUP_LOCATION
done
fi
if [[ ! ${BACKUP_LOCATION} =~ ^/ ]]; then
echo "Backup directory needs to be given as absolute path (starting with /)."
exit 1
fi
if [[ -f ${BACKUP_LOCATION} ]]; then
echo "${BACKUP_LOCATION} is a file!"
exit 1
fi
if [[ ! -d ${BACKUP_LOCATION} ]]; then
echo "${BACKUP_LOCATION} is not a directory"
read -p "Create it now? [y|N] " CREATE_BACKUP_LOCATION
if [[ ! ${CREATE_BACKUP_LOCATION,,} =~ ^(yes|y)$ ]]; then
exit 1
else
mkdir -p ${BACKUP_LOCATION}
chmod 755 ${BACKUP_LOCATION}
fi
else
if [[ ${1} == "backup" ]] && [[ -z $(echo $(stat -Lc %a ${BACKUP_LOCATION}) | grep -oE '[0-9][0-9][5-7]') ]]; then
echo "${BACKUP_LOCATION} is not write-able for others, that's required for a backup."
exit 1
fi
fi
BACKUP_LOCATION=$(echo ${BACKUP_LOCATION} | sed 's#/$##')
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
COMPOSE_FILE=${SCRIPT_DIR}/../docker-compose.yml
ENV_FILE=${SCRIPT_DIR}/../.env
THREADS=$(echo ${THREADS:-1})
ARCH=$(uname -m)
if ! [[ "${THREADS}" =~ ^[1-9][0-9]?$ ]] ; then
echo "Thread input is not a number!"
exit 1
elif [[ "${THREADS}" =~ ^[1-9][0-9]?$ ]] ; then
echo "Using ${THREADS} Thread(s) for this run."
echo "Notice: You can set the Thread count with the THREADS Variable before you run this script."
fi
if [ ! -f ${COMPOSE_FILE} ]; then
echo "Compose file not found"
exit 1
fi
if [ ! -f ${ENV_FILE} ]; then
echo "Environment file not found"
exit 1
fi
echo "Using ${BACKUP_LOCATION} as backup/restore location."
echo
source ${SCRIPT_DIR}/../mailcow.conf
if [[ -z ${COMPOSE_PROJECT_NAME} ]]; then
echo "Could not determine compose project name"
exit 1
else
echo "Found project name ${COMPOSE_PROJECT_NAME}"
CMPS_PRJ=$(echo ${COMPOSE_PROJECT_NAME} | tr -cd "[0-9A-Za-z-_]")
fi
if grep --help 2>&1 | head -n 1 | grep -q -i "busybox"; then
>&2 echo -e "\e[31mBusyBox grep detected on local system, please install GNU grep\e[0m"
exit 1
fi
function backup() {
DATE=$(date +"%Y-%m-%d-%H-%M-%S")
mkdir -p "${BACKUP_LOCATION}/mailcow-${DATE}"
chmod 755 "${BACKUP_LOCATION}/mailcow-${DATE}"
cp "${SCRIPT_DIR}/../mailcow.conf" "${BACKUP_LOCATION}/mailcow-${DATE}"
touch "${BACKUP_LOCATION}/mailcow-${DATE}/.$ARCH"
for bin in docker; do
if [[ -z $(which ${bin}) ]]; then
>&2 echo -e "\e[31mCannot find ${bin} in local PATH, exiting...\e[0m"
exit 1
fi
done
while (( "$#" )); do
case "$1" in
vmail|all)
docker run --name mailcow-backup --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_vmail-vol-1$):/vmail:ro,z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --warning='no-file-ignored' --use-compress-program="pigz --rsyncable -p ${THREADS}" -Pcvpf /backup/backup_vmail.tar.gz /vmail
;;&
crypt|all)
docker run --name mailcow-backup --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_crypt-vol-1$):/crypt:ro,z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --warning='no-file-ignored' --use-compress-program="pigz --rsyncable -p ${THREADS}" -Pcvpf /backup/backup_crypt.tar.gz /crypt
;;&
redis|all)
docker exec $(docker ps -qf name=redis-mailcow) redis-cli save
docker run --name mailcow-backup --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_redis-vol-1$):/redis:ro,z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --warning='no-file-ignored' --use-compress-program="pigz --rsyncable -p ${THREADS}" -Pcvpf /backup/backup_redis.tar.gz /redis
;;&
rspamd|all)
docker run --name mailcow-backup --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_rspamd-vol-1$):/rspamd:ro,z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --warning='no-file-ignored' --use-compress-program="pigz --rsyncable -p ${THREADS}" -Pcvpf /backup/backup_rspamd.tar.gz /rspamd
;;&
postfix|all)
docker run --name mailcow-backup --rm \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_postfix-vol-1$):/postfix:ro,z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --warning='no-file-ignored' --use-compress-program="pigz --rsyncable -p ${THREADS}" -Pcvpf /backup/backup_postfix.tar.gz /postfix
;;&
mysql|all)
SQLIMAGE=$(grep -iEo '(mysql|mariadb)\:.+' ${COMPOSE_FILE})
if [[ -z "${SQLIMAGE}" ]]; then
echo "Could not determine SQL image version, skipping backup..."
shift
continue
else
echo "Using SQL image ${SQLIMAGE}, starting..."
docker run --name mailcow-backup --rm \
--network $(docker network ls -qf name=^${CMPS_PRJ}_mailcow-network$) \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_mysql-vol-1$):/var/lib/mysql/:ro,z \
-t --entrypoint= \
--sysctl net.ipv6.conf.all.disable_ipv6=1 \
-v ${BACKUP_LOCATION}/mailcow-${DATE}:/backup:z \
${SQLIMAGE} /bin/sh -c "mariabackup --host mysql --user root --password ${DBROOT} --backup --rsync --target-dir=/backup_mariadb ; \
mariabackup --prepare --target-dir=/backup_mariadb ; \
chown -R 999:999 /backup_mariadb ; \
/bin/tar --warning='no-file-ignored' --use-compress-program='gzip --rsyncable' -Pcvpf /backup/backup_mariadb.tar.gz /backup_mariadb ;"
fi
;;&
--delete-days)
shift
if [[ "${1}" =~ ^[0-9]+$ ]]; then
find ${BACKUP_LOCATION}/mailcow-* -maxdepth 0 -mmin +$((${1}*60*24)) -exec rm -rvf {} \;
else
echo "Parameter of --delete-days is not a number."
fi
;;
esac
shift
done
}
function restore() {
for bin in docker; do
if [[ -z $(which ${bin}) ]]; then
>&2 echo -e "\e[31mCannot find ${bin} in local PATH, exiting...\e[0m"
exit 1
fi
done
if [ "${DOCKER_COMPOSE_VERSION}" == "native" ]; then
COMPOSE_COMMAND="docker compose"
elif [ "${DOCKER_COMPOSE_VERSION}" == "standalone" ]; then
COMPOSE_COMMAND="docker-compose"
else
echo -e "\e[31mCan not read DOCKER_COMPOSE_VERSION variable from mailcow.conf! Is your mailcow up to date? Exiting...\e[0m"
exit 1
fi
echo
echo "Stopping watchdog-mailcow..."
docker stop $(docker ps -qf name=watchdog-mailcow)
echo
RESTORE_LOCATION="${1}"
shift
while (( "$#" )); do
case "$1" in
vmail)
docker stop $(docker ps -qf name=dovecot-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_vmail-vol-1$):/vmail:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_vmail.tar.gz
docker start $(docker ps -aqf name=dovecot-mailcow)
echo
echo "In most cases it is not required to run a full resync, you can run the command printed below at any time after testing wether the restore process broke a mailbox:"
echo
echo "docker exec $(docker ps -qf name=dovecot-mailcow) doveadm force-resync -A '*'"
echo
read -p "Force a resync now? [y|N] " FORCE_RESYNC
if [[ ${FORCE_RESYNC,,} =~ ^(yes|y)$ ]]; then
docker exec $(docker ps -qf name=dovecot-mailcow) doveadm force-resync -A '*'
else
echo "OK, skipped."
fi
;;
redis)
docker stop $(docker ps -qf name=redis-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_redis-vol-1$):/redis:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_redis.tar.gz
docker start $(docker ps -aqf name=redis-mailcow)
;;
crypt)
docker stop $(docker ps -qf name=dovecot-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_crypt-vol-1$):/crypt:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_crypt.tar.gz
docker start $(docker ps -aqf name=dovecot-mailcow)
;;
rspamd)
if [[ $(find "${RESTORE_LOCATION}" \( -name '*x86*' -o -name '*aarch*' \) -exec basename {} \; | sed 's/^\.//' | sed 's/^\.//') == "" ]]; then
echo -e "\e[33mCould not find a architecture signature of the loaded backup... Maybe the backup was done before the multiarch update?"
sleep 2
echo -e "Continuing anyhow. If rspamd is crashing opon boot try remove the rspamd volume with docker volume rm ${CMPS_PRJ}_rspamd-vol-1 after you've stopped the stack.\e[0m"
sleep 2
docker stop $(docker ps -qf name=rspamd-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_rspamd-vol-1$):/rspamd:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_rspamd.tar.gz
docker start $(docker ps -aqf name=rspamd-mailcow)
elif [[ $ARCH != $(find "${RESTORE_LOCATION}" \( -name '*x86*' -o -name '*aarch*' \) -exec basename {} \; | sed 's/^\.//' | sed 's/^\.//') ]]; then
echo -e "\e[31mThe Architecture of the backed up mailcow OS is different then your restoring mailcow OS..."
sleep 2
echo -e "Skipping rspamd due to compatibility issues!\e[0m"
else
docker stop $(docker ps -qf name=rspamd-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_rspamd-vol-1$):/rspamd:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_rspamd.tar.gz
docker start $(docker ps -aqf name=rspamd-mailcow)
fi
;;
postfix)
docker stop $(docker ps -qf name=postfix-mailcow)
docker run -i --name mailcow-backup --rm \
-v ${RESTORE_LOCATION}:/backup:z \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_postfix-vol-1$):/postfix:z \
${DEBIAN_DOCKER_IMAGE} /bin/tar --use-compress-program="pigz -d -p ${THREADS}" -Pxvf /backup/backup_postfix.tar.gz
docker start $(docker ps -aqf name=postfix-mailcow)
;;
mysql|mariadb)
SQLIMAGE=$(grep -iEo '(mysql|mariadb)\:.+' ${COMPOSE_FILE})
if [[ -z "${SQLIMAGE}" ]]; then
echo "Could not determine SQL image version, skipping restore..."
shift
continue
elif [ ! -f "${RESTORE_LOCATION}/mailcow.conf" ]; then
echo "Could not find the corresponding mailcow.conf in ${RESTORE_LOCATION}, skipping restore."
echo "If you lost that file, copy the last working mailcow.conf file to ${RESTORE_LOCATION} and restart the restore process."
shift
continue
else
read -p "mailcow will be stopped and the currently active mailcow.conf will be modified to use the DB parameters found in ${RESTORE_LOCATION}/mailcow.conf - do you want to proceed? [Y|n] " MYSQL_STOP_MAILCOW
if [[ ${MYSQL_STOP_MAILCOW,,} =~ ^(no|n|N)$ ]]; then
echo "OK, skipped."
shift
continue
else
echo "Stopping mailcow..."
${COMPOSE_COMMAND} -f ${COMPOSE_FILE} --env-file ${ENV_FILE} down
fi
#docker stop $(docker ps -qf name=mysql-mailcow)
if [[ -d "${RESTORE_LOCATION}/mysql" ]]; then
docker run --name mailcow-backup --rm \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_mysql-vol-1$):/var/lib/mysql/:rw,z \
--entrypoint= \
-v ${RESTORE_LOCATION}/mysql:/backup:z \
${SQLIMAGE} /bin/bash -c "shopt -s dotglob ; /bin/rm -rf /var/lib/mysql/* ; rsync -avh --usermap=root:mysql --groupmap=root:mysql /backup/ /var/lib/mysql/"
elif [[ -f "${RESTORE_LOCATION}/backup_mysql.gz" ]]; then
docker run \
-i --name mailcow-backup --rm \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_mysql-vol-1$):/var/lib/mysql/:z \
--entrypoint= \
-u mysql \
-v ${RESTORE_LOCATION}:/backup:z \
${SQLIMAGE} /bin/sh -c "mysqld --skip-grant-tables & \
until mysqladmin ping; do sleep 3; done && \
echo Restoring... && \
gunzip < backup/backup_mysql.gz | mysql -uroot && \
mysql -uroot -e SHUTDOWN;"
elif [[ -f "${RESTORE_LOCATION}/backup_mariadb.tar.gz" ]]; then
docker run --name mailcow-backup --rm \
-v $(docker volume ls -qf name=^${CMPS_PRJ}_mysql-vol-1$):/backup_mariadb/:rw,z \
--entrypoint= \
-v ${RESTORE_LOCATION}:/backup:z \
${SQLIMAGE} /bin/bash -c "shopt -s dotglob ; \
/bin/rm -rf /backup_mariadb/* ; \
/bin/tar -Pxvzf /backup/backup_mariadb.tar.gz"
fi
echo "Modifying mailcow.conf..."
source ${RESTORE_LOCATION}/mailcow.conf
sed -i --follow-symlinks "/DBNAME/c\DBNAME=${DBNAME}" ${SCRIPT_DIR}/../mailcow.conf
sed -i --follow-symlinks "/DBUSER/c\DBUSER=${DBUSER}" ${SCRIPT_DIR}/../mailcow.conf
sed -i --follow-symlinks "/DBPASS/c\DBPASS=${DBPASS}" ${SCRIPT_DIR}/../mailcow.conf
sed -i --follow-symlinks "/DBROOT/c\DBROOT=${DBROOT}" ${SCRIPT_DIR}/../mailcow.conf
source ${SCRIPT_DIR}/../mailcow.conf
echo "Starting mailcow..."
${COMPOSE_COMMAND} -f ${COMPOSE_FILE} --env-file ${ENV_FILE} up -d
#docker start $(docker ps -aqf name=mysql-mailcow)
fi
;;
esac
shift
done
echo
echo "Starting watchdog-mailcow..."
docker start $(docker ps -aqf name=watchdog-mailcow)
}
if [[ ${1} == "backup" ]]; then
backup ${@,,}
elif [[ ${1} == "restore" ]]; then
i=1
declare -A FOLDER_SELECTION
if [[ $(find ${BACKUP_LOCATION}/mailcow-* -maxdepth 1 -type d 2> /dev/null| wc -l) -lt 1 ]]; then
echo "Selected backup location has no subfolders"
exit 1
fi
for folder in $(ls -d ${BACKUP_LOCATION}/mailcow-*/); do
echo "[ ${i} ] - ${folder}"
FOLDER_SELECTION[${i}]="${folder}"
((i++))
done
echo
input_sel=0
while [[ ${input_sel} -lt 1 || ${input_sel} -gt ${i} ]]; do
read -p "Select a restore point: " input_sel
done
i=1
echo
declare -A FILE_SELECTION
RESTORE_POINT="${FOLDER_SELECTION[${input_sel}]}"
if [[ -z $(find "${FOLDER_SELECTION[${input_sel}]}" -maxdepth 1 \( -type d -o -type f \) -regex ".*\(redis\|rspamd\|mariadb\|mysql\|crypt\|vmail\|postfix\).*") ]]; then
echo "No datasets found"
exit 1
fi
echo "[ 0 ] - all"
# find all files in folder with *.gz extension, print their base names, remove backup_, remove .tar (if present), remove .gz
FILE_SELECTION[0]=$(find "${FOLDER_SELECTION[${input_sel}]}" -maxdepth 1 \( -type d -o -type f \) \( -name '*.gz' -o -name 'mysql' \) -printf '%f\n' | sed 's/backup_*//' | sed 's/\.[^.]*$//' | sed 's/\.[^.]*$//')
for file in $(ls -f "${FOLDER_SELECTION[${input_sel}]}"); do
if [[ ${file} =~ vmail ]]; then
echo "[ ${i} ] - Mail directory (/var/vmail)"
FILE_SELECTION[${i}]="vmail"
((i++))
elif [[ ${file} =~ crypt ]]; then
echo "[ ${i} ] - Crypt data"
FILE_SELECTION[${i}]="crypt"
((i++))
elif [[ ${file} =~ redis ]]; then
echo "[ ${i} ] - Redis DB"
FILE_SELECTION[${i}]="redis"
((i++))
elif [[ ${file} =~ rspamd ]]; then
if [[ $(find "${FOLDER_SELECTION[${input_sel}]}" \( -name '*x86*' -o -name '*aarch*' \) -exec basename {} \; | sed 's/^\.//' | sed 's/^\.//') == "" ]]; then
echo "[ ${i} ] - Rspamd data (unkown Arch detected, restore with caution!)"
FILE_SELECTION[${i}]="rspamd"
((i++))
elif [[ $ARCH != $(find "${FOLDER_SELECTION[${input_sel}]}" \( -name '*x86*' -o -name '*aarch*' \) -exec basename {} \; | sed 's/^\.//' | sed 's/^\.//') ]]; then
echo -e "\e[31m[ NaN ] - Rspamd data (incompatible Arch, cannot restore it)\e[0m"
else
echo "[ ${i} ] - Rspamd data"
FILE_SELECTION[${i}]="rspamd"
((i++))
fi
elif [[ ${file} =~ postfix ]]; then
echo "[ ${i} ] - Postfix data"
FILE_SELECTION[${i}]="postfix"
((i++))
elif [[ ${file} =~ mysql ]] || [[ ${file} =~ mariadb ]]; then
echo "[ ${i} ] - SQL DB"
FILE_SELECTION[${i}]="mysql"
((i++))
fi
done
echo
input_sel=-1
while [[ ${input_sel} -lt 0 || ${input_sel} -gt ${i} ]]; do
read -p "Select a dataset to restore: " input_sel
done
echo "Restoring ${FILE_SELECTION[${input_sel}]} from ${RESTORE_POINT}..."
restore "${RESTORE_POINT}" ${FILE_SELECTION[${input_sel}]}
fi
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